The RFE Retractor was designed tough to be used on the Catcher's Mitt.  It is so good we are offering them for sale by themselves.  They can be used anywhere you need a retractor, keys, clippers, phone, utility knife, duck call, etc.  It comes with 36" of coated SS cable and a split ring.  In that configuration it has 6.2 oz of retraction force.  9.15 oz if shortened to 30", 10.30 oz If shortened to 24".  It also has a sturdy rotating stainless steel clip.