DESCRIPTION High strength Aluminum insert Fits .166" ID diameter shafts Improved impact protection sleeve strengthens arrow tip from fracturing Increases impact resilience and durability Patent-pending taper lock machining improves strength and concentricity Accepts standard 5/16" broadheads with 8-32 thread Provides 1/4" more shaft protection and engagement over previous SHOK inserts Weight: 50 grains Sold in a 12 Pack Fitment: Satin Brown: ACISHOKVS fits VAP 400, 450, & 500 spine Satin Green: ACISHOKVM fits VAP 350 spine | VAP TKO & VAP SS 400 spine Satin Gray: ACISHOKVL fits VAP 300 spine | VAP TKO & VAP SS 350 spine Satin Black: ACISHOKVXL fits VAP 250 spine | VAP TKO & VAP SS 300 spine Satin Tan: ACISHOKVXXL fits VAP SS 250 spine