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Technical Specification
PRODUCT NUMBER AK47191DBS170FGDBS99FGRBSP085941-14386123881438815
Type HSS Drill BitHSS Drill BitDrill Bit SetHSS Drill BitHSS Drill BitHSS Drill BitHSS Drill BitHSS Drill Bit
Size 10mm77mm3.2mm8.5mm9mm
Format Set
Pack Qty 1010
Size Range Up to 10mm51-100mmUp to 10mmUp to 10mmUp to 10mm

Q 1. What materials are these drill bits suitable for?

A. The AK4725 bits are ideal for use on stainless steel and copper, and are designed to reduce friction and heat on harder materials.

Q 2. What is the split point angle on these drill bits?

A. The bits feature a 135° split point, which enables them to bite into the workpiece immediately when drilling begins.

Q 3. What sizes are included in the AK4725 set?

A. The set contains 25 bits ranging from Ø1mm to Ø13mm in 0.5mm increments: Ø1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, and 13mm.

Q 4. Are these fully ground or rolled HSS bits?

A. These are fully ground HSS drill bits, which produces a superior quality of finish compared to normal HSS drills.

Q 5. What standard do these drill bits conform to?

A. These bits conform to DIN 338.

Q 6. Do these come with any storage?

A. Yes, the set is supplied in a storage case to keep all 25 bits organised and protected.

Q 7. What does the coating on these drill bits do?

A. The coating is designed to reduce friction and heat during drilling, which is particularly beneficial when working with harder materials such as stainless steel.

Q 8. How do these compare to standard HSS drill bits?

A. The fully ground construction and quicker swarf clearance from the cutting edge produces a superior quality of finish compared to normal HSS drills, and the 135° split point reduces the need for a centre punch.

Q 9. Are there smaller sets available if I do not need all 25 sizes?

A. Yes, a smaller variant is available - see AK4719. Alternative sets are also listed under similar products.

Q 10. What is your returns policy?

A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN). You may also be asked to share images of the product and its packaging for verification. Items that do not meet these conditions will not be accepted for return. If your return is approved, we will initiate a refund to your credit card or original method of payment. A restocking fee of up to 15% of the order value may apply to each returned item.

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