Hit Fitness Lock Jaw Collars Pair McSport-N123202 According to a NASA study

According to a NASA study

Exercise timer

Recommended: Fill base with sand for optimal stability and performance

With its double panel construction

Hit Fitness Lock Jaw Collars Pair McSport-N123202 According to a NASA studyHIT Fitness Lock Jaw Collars are made from premium durable materials and are suitable for use with any standard Olympic barbell sleeve. Benefits: Corrosion resistant Prevents weight plates from slipping or moving during sets Can be used during high impact exercise movements Sold in pairs Compatible with all traditional Olympic barbells and many specialized barbells Secure locking clamp mechanism Will not damage plates, barbells, or surrounding