-Allen key type -Bolt/Nut Dia6 x M6x1 HEXS -Shaft Dia8 x L30 M6x1 INT HEXS -Shaft Head is threaded to accept cable hanger -Fitment: -Lower shock mount -Toptube shock mount -Sold as a Set 2019-2021 Fluid FS MKIII - lower shock 2020 Fluid Youth FS - toptube shock shaft 2021 Sight Alloy BMZ 2021 Range Alloy BMZ 2021 Fluid FS Alloy BMZ 2022 Fluid FS Alloy - Lower shock location 2021 Sight Carbon BMZ - upper location