These Bosch 4.2mm HSS-G drill bits (10 pack) are suitable for drilling alloyed and non-alloyed steel up to a tensile strength of 900 N/mm², cast steel, cast iron, malleable cast iron, sintered iron, non-ferrous metals and hard plastics.
These precision-ground drill bits enable up to 40% faster drilling and up to 50% lower feed pressure than standard-ground HSS drill bits with a chisel edge.
They also feature a self-centering split point tip, which means that you do not need to pre-punch or pilot drill up to 10mm in diameter.
Safety note: always use cutting oil when working with these Bosch HSS drill bits.
Bosch offer a standard 1 year warranty with all of their machines, batteries and chargers. You can extend this to a 3 year warranty for power tools or a 2 year warranty for batteries and chargers by registering your product on the Bosch Pro 360 portal here within 4 weeks of purchase.
Note: Due to the nature of their application, accessories and consumables do not have a wear and tear guarantee or warranty. If you are unhappy with your product then you can contact Bosch directly to discuss this.
Free UK Delivery
Next Working Day Delivery
Order by 3pm*
1 Hour Time Slot
via text alert
Delivery 6 Days a Week
Monday - Saturday
to UK mainland when you spend £99 (up to 30kg).
You can test your delivery postcode at the first step of the checkout.
A surcharge applies for orders that include a 'bulky item' or where the total weight is over 30kg. A 'bulky item' will highlight itself on the product description page. A surcharge also applies for orders that are being delivered to a UK offshore postcode. This surcharge is discounted when you spend over £99.
Our working days are Monday - Friday.
Only for in-stock items (on the product description page it will display either 'next day' or '3-4 days dispatch'). Order by 2pm for items that trigger a 'freight rate' surcharge at the checkout (e.g. heavy generators and table saws) as well as anything that includes gas canisters (e.g. Paslode nails). Please allow an extra day for Scottish Highlands postcodes. Freight items can not be delivered offshore.
Untracked 4-7 working day delivery (small parcels).
We can now provide low-cost delivery for certain small parcels of up to 2kg for orders under £99. This service is provided by Royal Mail (currently on a 4-7 working day service if in stock). It's applicable on some accessories from Bosch, Festool, DeWalt, Trend, Fein and Makita. Some compact 18V body only tools will also qualify. This service won't accept any combustible items such as canisters, cartridges or lithium batteries.
PIN code verification at your doorstep
We've improved the security of our deliveries to you with DPD's PIN code verification system. We will be using this service on most orders to ensure your parcel gets to you securely.
You will receive a PIN code via text and/or email which you must recite to the delivery driver on arrival. If someone is receiving the parcel on your behalf, remember to pass on the code to them. The driver can also resend the PIN code to the original contact on arrival if required. This service requires a mobile phone number with your order so please ensure you provide one to take advantage.
- Our deliveries are very easy to track, plus you'll get a handy 1 hour delivery window so you know when to expect your items. You'll receive a tracking number with your 'order dispatched' email.
- Your VAT invoice is always in the box with your goods.
- Your goods are always securely packaged when leaving our warehouse. We strive to ensure your goods reach you in prime condition.
- Our main courier is DPD. We use DPD for the vast majority of our deliveries. APC and TNT handle other specific types of deliveries for us. In poor weather conditions our couriers may experience delays that are out of our control, however we will help you in every way possible to track delivery progress.
- Delivery to construction/job sites is possible, but done so at your own risk. Our service can deliver to an address, but we can't guarantee delivery to a specific person or location at the address. For the best outcome, please provide detailed courier instructions and a contact number that we can pass on to the courier.
- Delivery to 'safe place' is not available for most orders, someone must be present to receive your delivery. We do this to ensure our couriers deliver to the right person at the right address, to ensure your goods are not lost or stolen. Particularly as most orders are of high value.
|UK standard - next day - orders over £99||FREE|
|UK standard - next day - orders below £99||£6.99|
|UK standard - next day before noon - orders over £99||£8.99|
|UK standard - next day before noon - orders below £99||£15.99|
|Scottish Highlands - 1-2 days - orders over £99||FREE|
|Scottish Highlands - 1-2 days - orders below £99||£6.99|
|UK Saturday premium - orders over £99||£24.00|
|UK Saturday premium - orders below £99||£30.99|
Northern Ireland, Scottish Islands & other UK Islands
|UK offshore - 1-2 working days - orders over £99||£7.00|
|UK offshore - 1-2 working days - orders below £99||£13.99|
|Channel Islands - 2 working days - orders over £99||£15.00|
|Channel Islands - 2 working days - orders below £99||£21.99|
|Order includes Paslode nails/gas:|
|Channel Islands - 3-5 working days - orders over £99||Unavailable|
|Channel Islands - 3-5 working days - orders below £99||Unavailable|
|UK freight - 1-2 working days||£25.00|
|Highlands freight - 2/3 days||£100.00||Offshore freight||Unavailable|
It's unsafe to lift anything above 30kg, so a pallet is required to transport these goods.
UK - Next Working Day Before Noon (*1pm for some remote postcodes) for in-stock items and only on weekdays. Orders placed after 3pm on Thursday are received on Monday morning. Orders placed after 3pm on Friday are received on Tuesday morning.
UK - Saturday Premium for in-stock items ordered between 3pm Thursday - 3pm Friday to be received on Saturday. No Sunday deliveries.
Want to collect in Glasgow? Reserve online and pick up at your convenience:
1. Add any in-stock items to your basket on our website
2. Select 'Collection - Glasgow Store' at the checkout
3. Enter your name, number, email & invoice address
4. Collect and pay in store (within 2 business days)
Delivery is available to Ireland. We're currently unable to ship items above 30kg. You must place your order with VAT included. We will then refund the VAT upon confirmation of your VAT number. Email your VAT number to email@example.com immediately after placing your order.
All of our delivery charges are as per the costs from the courier. We always strive to improve on these.
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