Why does my drill bit keep slipping in the chuck?
| Symptom | Cause | Fix |
|---|---|---|
| Slips on the first heavy cut | Shank sitting on the jaw tips | Seat it fully, then tighten all three positions on a keyed chuck |
| Spins immediately, every time | Scored or out-of-round shank | Replace the bit; a chewed shank cannot be repaired |
| Only large bits slip | Worn jaws or a keyless chuck at its limit | Use a keyed chuck, or a 1/2 in chuck for 13 mm shanks |
| Slips and wobbles | Hex shank in a three-jaw chuck | Use round shanks in a chuck |
The cheap habits: wipe the shank before clamping, never clamp on the flutes, and tighten a keyed chuck in all three holes. Snugging one hole is the single most common cause of a slipping bit.
Cobalt Drill Bit Set, 13 pcs, M35, imperial, metal case — $59
Price includes US duty, international shipping and customs clearance. In stock. Dispatched within 48 hours. Delivered in 7–12 days, tracked. 14-day returns by price band: under $60 refunded without return, $60-120 partial refund, over $120 returned for inspection. Free replacement for damage in transit. No US state sales tax collected.
| Product | Price | Pieces | Weight |
|---|---|---|---|
| Cobalt Drill Bit Set, 13 pcs, M35, imperial, metal case | $59 | 13 pcs | 247 g |
| Cobalt Drill Bit Set, 51 pcs, HSS-Co, metal case | $69 | 51 pcs | 620 g |
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Options we stock
| Product | Price (duty and shipping included) | Weight | Delivery |
|---|---|---|---|
| Cobalt Drill Bit Set, 13 pcs, M35, imperial, metal case | USD 59.00 | 247 g | 7-12 days |
| Cobalt Drill Bit Set, 51 pcs, HSS-Co, metal case | USD 69.00 | 620 g | 7-12 days |