This clamp is designed to be used with your reels stock hardware and protect your expensive blanks from being crushed. Deep serrations on the inside and rounded edges on the outside equal a comfortable grip and maximum holding power for those long battles. This clamp is CNC Machined out of aircraft grade 6061 aluminum and anodized to prevent corrosion. Custom laser cut stainless steel inserts and washers are provided so it will work for a wide variety of reels.