Item No:70258 Educational Construction Series (Parts) No.258 UNIVERSAL SLIDER SET This set makes sliders that run along straight and separately sold curved Tamiya universal arms, changing gearbox rotation into motion in a straight line. They can also be sandwiched between two universal arms. Sliders have no fewer than nine different attachment holes, unlocking a myriad of construction types. ★This set contains parts for two 29mm-diameter sliders 20mm in height, two 170mm universal arms (width: 10mm,…