Materials: nickel, chrome, copper cap and nickel plating
Hats and mats children with small boxed and spoke with mounted large box
Cap: ordinary, digging holes, slot milling and longer
Diameter: 1.85 (15k), 1.95 (14k), 2.22 (13k), 2.55 (12k), 3.05 (10k) and 3.2mm (8k)
Length: 75 to 310mm