product description:
WARRANTY & CUSTOMER SERVICE: GORCHEN provides 30 Days Warranty and Lifetime Product Support.
Within this period, if the countersink drill bit gets broken after usage or for any reason you are not satisfied with it,
please contact us for new replacements or return, we will resolve any possible issue for you.
MORE DETAILS: All 7 bits can drill a screw hole whose screw head position diameter is 9.3mm (0.37 inch).
USAGE SUGGESTION: To avoid countersink drill bits become overheated and get burned up due to fast rotary friction,
we suggest customers to use cutting fluid to keep the bits cold during usage.
PACKAGE LIST: 7 x Countersink Drill Bits (7 Listed Sizes)
1 x Allen Wrench
1 x Plastic Storage Case
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