Axial AX31232 Screw Shaft, 4 x 2.5 x 16.5mm FEATURES: Used in the assembly of various Axial kits May also be used in any application requiring this size of screw shaft INCLUDES: Six M4x2.5x16.5mm Screw Shafts JXS 10/31/14 IR/JXS The product is durable