PRUNUS Popular Hunting Arrows in Fiberglass Quality 12 Pack Prunus Popular Hunting Archery Arrows in Fiberglass Quality 12 Pack PACT16052201 Total length in 31.5 inches and diameter in 8 mm Replaceable tips with 100 grain Nocks are tight and not glued,Could be twisted or removed to any orientation Very durable and highly recommend since we have test already since we are archers too