Zelta Heavy Duty Retractable Reel Key Holder with Stainless Steel Carabiner Swivel Clip and Plastic Shell (Skull Pattern) PREMIUM QUALITY: Made of durable ABS plastic shell, making this key holder very strong and lightweight. Heavy duty 23.6" stainless steel cord that extends from the gear, for a quiet, smooth extension. SELF RETRACTING: You don't have to take the key out to open the door, just simply pull the key out that is attached with stainless steel cord, the cord will be self retracting. The maximum retractable of stainless steel wire is 23.6". TESTED TO 1 MILLION PULLS: Our stainless steel cord withstand more than 1,000,000 pulls, durable and long lasting. 1.4" DIAMETER REEL: No bulky or heavy chains sticking out of your belt or bag, capable to hold 6 keys or 4 oz max load. EASY TO USE: Convenient to attach keys, whistles, and a variety of other items. The stainless steel catabiner conveniently clips onto any belt loop, bags or pocket book, make it always accessible and secure. Great for any professionals that's constantly on the go!