KIPP K0253.1062 SPHERICAL KNOB SIZE:1 D1=25 D=M06 THERMOPLASTIC BLACK RAL7021 COMP:STEEL CAP:GREEN RAL6032 Product description: An ergonomically perfect product for a three dimensional grip, with a spherical surface that has vertical ribs to reduce slipping. Fulfills the requirements of diverse application sectors. Material: Black thermoplastic. bushing grade 5.8 steel or 1.4305 (AISI 303 equivalent) stainless steel. Version: Steel trivalent blue passivated, stainless steel bright.