4mm Thickness Spur Gear Transmission For Hardware Feature:1. 0.8 Module: This Spur Gear With 0.8 Module can perfectly match any gear that also has 0.8.2 Module. With 8 Holes: 8 Hole design with small size and light weight enables free design and various assembly.3. Flexible Applications: Enables wide application in intelligent robot, industrial machinery and equipment, etc.4. Good Material: High quality aluminum material has passed anodic oxidation, very durable.5. 3pcs in 1 set: Including 3pcs spur gear in 1 set, which makes installation and replacement much easier. Specification:Item Type: Gear Transmission Material: Aluminum Surface Treatment: Anodic Oxidation. Center hole size: Approx. 14mm/0.55in Module: 0.8Thickness: Approx. 4mm/0.16in Module Number of Teeth 4312-0414-0045 45 4312-0414-0046 46 4312-0414-0048 48 4312-0414-0050 50 Packing List:3 x Gear RackNote: Please adjust the suitable size of your design before use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.