The Knipex 44 21 series of internal bent circlip pliers are constructed from chrome vanadium solid style forged top quality steel with precision non-slip tips for added strength and durability. Like most of the Knipex range of pliers, all components are oil-hardened with polished heads and plastic coated handles. Knipex circlip pliers are ideal for all trade or DIY applications and especially the automotive trade. 44 21 J11: Bore Size: 12 - 25mm.44 21 J21: Bore Size: 19 - 60mm.44 21 J31: Bore Size: 40 - 100mm. Length 215mm (8 1/2 in).Size of bore 40-100 mm. KNIPEX Circlip Pliers Internal 90 Bent Tip 40 - 100Mm J31 in Red