High quality: The parallel pin is made of high-quality stainless steel, which is -resistant and not easy to rust. and replaceable: and long service life, each model has 5-10 pieces, which can be replaced at any time, which is very convenient Complete model: a box contains multiple models with complete specifications, which can be used in different working environments. There is no need to go to the supermarket to buy a single model, which is very convenient Standard size: Standard processing, can be used as a perfect fastener. Condition: 100% new Size: 10pcs 3 x 3 x 8mm / 0.1 x 0.1 x 0.3in 10pcs 3 x 3 x 10mm / 0.1 x 0.1 x 0.4in 10pcs 3 x 3 x 12mm / 0.1 x 0.1 x 0.5in 10pcs 3 x 3 x 16mm / 0.1 x 0.1 x 0.6in 10pcs 4 x 4 x 10mm / 0.2 x 0.2 x 0.4in 10pcs 4 x 4 x 12mm / 0.2 x 0.2 x 0.5in 10pcs 4 x 4 x 16mm / 0.2 x 0.2 x 0.6in 10pcs 4 x 4 x 20mm / 0.2 x 0.2 x 0.8in 10pcs 5 x 5 x 12mm / 0.2 x 0.2 x 0.5in 10pcs 5 x 5 x 16mm / 0.2 x 0.2 x 0.6in 10pcs 5 x 5 x 20mm / 0.2 x 0.2 x 0.8in 10pcs 5 x 5 x 25mm / 0.2 x 0.2 x 1in 5pcs 6 x 6 x 16mm / 0.2 x 0.2 x 0.6in 5pcs 6 x 6 x 20mm / 0.2 x 0.2 x 0.8in 5pcs 6 x 6 x 25mm / 0.2 x 0.2 x 1in 5pcs 6 x 6 x 30mm / 0.2 x 0.2 x 1.2in Material:stainless steel colour:As shown Package Contents: 140 x keys for parallel drive shafts Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.