We are not the first company to make a peg w/ a nylon sleeve, I doubt we will be the last, but we have looked at the standard alloy/nylon designs out there & made some improvements rather than following what everyone else has put out. Firstly we went for a heat treated cromoly inner peg over alloy, this was so that we could use a thinner material which saves weight, adds strength, & allows us to use a thicker, stronger & more durable nylon sleeve, w/out making a huge bean can peg. As for the nylon, not all nylon is the same, we went for a low friction & tough abrasion resistant material w/ anti fracture properties that will keep these pegs sliding longer than a lot of others. Tested by all of our team for over 10 months, & hit many times w/ a large hammer, they have not failed once. Thinner cromo base peg for added strengthThicker low friction abrasion resistant replaceable nylon sleeve14mm with 10mm insertSold as singles110mm long40mm diameterTotal weight: 182g per pegSleeve weight: 66g per sleeveCromo peg weight: 116g per peg