2 pcs SBR16-length 200/250/300/350/400/450/500/550/600/650/700/750/800/850/900/950/1000mm (chose the LENGTH you need) 4 pcs slide blocks SBR16UU/SBR16LUU 1 pcs SFU1605 with nut and end machined -length 200/250/300/350/400/450/500/550/600/650/700/750/800/850/900/950/1000mm (chose the LENGTH you need) 1 set BKBF12 1 PCS nut housing DSG16H 1 pcs coulpers XB25*30-8*10( you can chose the other size you need)