Saunders Brass Nok Set 18-22 Strand 100 Pk Purple. Light weight rounded brass bow string speed nocks with protective inner liner keeps arrow-to-string position consistent. Specifications for Saunders Brass Nok Set 18-22 Strand 100 Pk: Manufacturer: Saunders Color: Purple Quantity: 100 Weight: 8.8 grain Features of Saunders Brass Nok Set: Crimp on brass position rings Purple 8.8 grains Package Contents: Saunders Brass Nok Set 18-22 Strand 100 Pk Saunders 3010: Brass Nok Set 18-22 Strand 100 Pk Purple