Features:_x000D__x000D_Polyurethane elastomers are characterized by high strength, high elasticity, small deformation and good stretching force. _x000D_Using polyurethane as die material can greatly shorten the time and cost of making die. _x000D_Low weight, machinability, corrosion resistance, exceptional impact resistance, typically good thermal and electrical insulating properties. _x000D_Polyurethane provides better tear and abrasion resistance and can be more readily bonded to another material. _x000D_Used for all kinds of machinery acting as a buffer or shock absorber, a ideal die spring. _x000D__x000D_Specification:_x000D_Material: PU_x000D_Color: Yellow_x000D__x000D_Model (Optional) External Diameter Inner Bore Diameter Length Weight Quantity _x000D_#01 20mm/0.8inch 8mm/0.3inch 500mm/19.7inch 111g/3.9oz 2pcs _x000D_#02 25mm/1inch 8mm/0.3inch 500mm/19.7inch 163g/5.7oz 1pcs _x000D_#03 30mm/1.2inch 8mm/0.3inch 500mm/19.7inch 297g/10.5oz 1pcs _x000D_#04 35mm/1.4inch 8mm/0.3inch 500mm/19.7inch 382g/13.5oz 1pcs _x000D_#05 40mm/1.6inch 8mm/0.3inch 500mm/19.7inch 279g/9.8oz 1pcs _x000D__x000D__x000D__x000D__x000D__x000D_Package List: _x000D_Model Quantity _x000D_#01 2pcs _x000D_#02 1pcs _x000D_#03 1pcs _x000D_#04 1pcs _x000D_#05 1pcs _x000D__x000D__x000D_Note:_x000D_Please allow slight error due to manual measurement. Thanks for your understanding. 1Polyurethane elastomers are characterized by high strength, high elasticity, small deformation and good stretching force. 2Using polyurethane as die material can greatly shorten the time and cost of making die. 3Low weight, machinability, corrosion resistance, exceptional impact resistance, typically good thermal and electrical insulating properties. 4Polyurethane provides better tear and abrasion resistance and can be more readily bonded to another material. 5Used for all kinds of machinery acting as a buffer or shock absorber, a ideal die spring.