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Quality material: use ultra-light, high-strength AL7075 aluminium alloy with high-quality CNC machined. Support area: 32T-38T Prevent falling off: The chain guide can be used for pipes in the frame to prevent the chain from falling off and moving without worrying about the chain being dropped again and extending the life of the chain. Applicable: suitable for BB centre shaft with thread / ISCG03 / ISCGO5. Suitable for front single disc transmission system with variable speed, no need to install protective plate for use, equipped with a gear plate at the bottom to effectively block some collisions from below. Attention: the chain guide cannot touch the chain and the crank. › See more product details; Product description Product Features: Material: 7075 CNC Aluminum Alloy Type: ISCG-03/ISCG-05. Range: 32-38T Features: durable, lightweight, rustproof. Color: Black Package includes: 1 x chain guide. 1 x conversion seat. 3 x M6 x 12 conversion seat screws. 3 x M6x8 Chain Guide Bolt 3 x M6x6 Conversion Seat Screws 6 x seat cushion rings; Product description Product Features: Material: 7075 CNC Aluminum Alloy Type: ISCG-03/ISCG-05. Range: 32-38T Features: durable, lightweight, rustproof. Color: Black Package includes: 1 x chain guide. 1 x conversion seat. 3 x M6 x 12 conversion seat screws. 3 x M6x8 Chain Guide Bolt 3 x M6x6 Conversion Seat Screws 6 x seat cushion rings; Product Features: Material: 7075 CNC Aluminum Alloy Type: ISCG-03/ISCG-05. Range: 32-38T Features: durable, lightweight, rustproof. Color: Black Package includes: 1 x chain guide. 1 x conversion seat. 3 x M6 x 12 conversion seat screws. 3 x M6x8 Chain Guide Bolt 3 x M6x6 Conversion Seat Screws 6 x seat cushion rings