50pc 6" timberlok screw. No pre-drilling. Countersinking head style. Heat-treated for increased strength. Heavy-duty threads for holding power. Easily removable. The OMG timber-lok is engineered to drive right through pressure treated beams. For best results, use a 1/2" high torque, low RPM power drill. 5/16" hex drive bit included. 50 count. Length: 6", Head Type: Countersunk Hex Washer, Material: Carbon Steel, Color: Black, Pkg Qty: 50 No. FMTLOK08-50: Length: 8", Head Type: Countersunk Hex Washer, Material: Carbon Steel, Color: Black, Pkg Qty: 50 No. FMTLOK10-50: Length: 10", Head Type: Countersunk Hex Washer, Material: Carbon Steel, Color: Black, Pkg Qty: 50