The Easton 5mm Match Grade SS #3 HIT Collar 6pk (801190) is a precision-engineered component designed to significantly improve the impact durability of arrows using the HIT system. Made from hardened stainless steel, these collars come in six sizes to fit all 5mm Easton arrows. Included with Easton Match Grade 5mm arrows, they can also be purchased separately for many 5mm arrows on the market. These collars fit 5/16 field points and are ideal for archers seeking enhanced arrow performance and durability.