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.