1) Head type: flat, non-starndard
2) Driver: phillips, torx, hex socket, pozi
3) Thread: A, AB, C, T, TT, etc.
4) Finish: zinc plated, black oxide, copper
5) Decoration hole: with / without
6) Also available: decoration cap and key (Z type, L type, Allen key)
Packing: bulk, small box packing
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