This is the Koah RSC 60M Freediving Spearfishing Speargun Reel Features: 60 Meter Reel Slide on base Ribbed center wheel to assist in line loading and prevent slippage Soft grip reel knob and a smooth drag The bottom of the reel has a hole that lines up with the base to allow for fixed mounting to the speargun with the provided longer screw The Koah RSC 60M is exactly what the industry has been waiting for. Rock solid construction, rugged slide on base, balanced wheel design, soft grip reel knob and a smooth drag that works under any circumstances are just a few of the advantages. The reel also has a ribbed center wheel to assist in line loading and prevent slippage. The bottom of the reel has a hole that lines up with the base to allow for fixed mounting to the speargun with the provided longer screw.