BUTTERFLY TACKINESS CHOP 2. After nearly 40 years Butterfly have developed a new slightly FASTER and harder feel version of the world famous Tackiness Chop! This new version is highly suitable for todays modern defensive game style. This is high friction tackly – surfaced rubber with a mid – density 41 degree sponge. Choppers who look to pick off those loose balls but who mostly defend will benefit from the new friction and more positive firmer sponge.