External Tooth, Plain Washer, Mudguard, Full Washers, Form A
Fibre, Brass, Stainless Steel, Ceramic, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 10.5 mm, 5.3 mm, 5.36 mm, 6.5 mm
8.1 mm, 0.4 mm, 0.5 mm, 2.5 mm, 0.3 mm
M8, M3 (Form A), M3, M5 (Form A), M2.5
DIN 6797A, DIN 6798J, DIN 6797J, BS 4320G, BS 4320B