This bike crank extractor is a professional and practical bike repair tools, which is mainly made of high-grade hard metal material for durable to use. The crank extractor is used to remove square type crank arms. Small and handy for any bike owner to keep in the toolbox. Features -Color:Red, silver, black -Material:Steel -Size (Wrench):16.20X2.90X1.00cm/6.37X1.14X0.39in -Size (Crank Puller):7.60X2.10X2.10cm/2.99X0.83X0.83in -Size (Center Shaft Remover):5.60X3.10X3.10cm/2.20X1.22X1.22in -Made of premium and sturdy steel, which can be high hardness. -Wear-resistant and durable, and it will not damage teeth. -The wrench grip is supple, non-slip and prevents scratches on the palm, facilitates force. -The tops of the spanner is designed as slotted screwdriver, very practical. -Suitable for any 20 teeth splined type bottom bracket, generally the type used for any bike with chainset. Package list: 1 x Crank Puller 1 x Shaft Remover 1 x Wrench