Description Reviews We are always on the lookout for quality slingshot elastics and we have found a great substitute for the now discontinued .040" medical latex we once stocked. From China, the GZK Band is a top performing slingshot elastic for the DIY slingshot enthusiast. The .72mm is very similar in performance as the .030" latex we offer. The 1mm is a great substitute for the .040" thickness medical latex that is no longer available. Sold in 1 meter x 26cm (3.3'x10.5") lengths. 6 Reviews 4 GZK 1mm Posted by Jerry Hyman on Dec 9th 2017 Found I had to cut another set just we bit longer than usual to account for oldfartness ...your age, strength and durability may vary.. 5 Follow up on GZK 0.72 bands Posted by DAVID BROCK on Sep 20th 2017 GZK 0.72 bands split when i noticed them at round 602 shots. These will be my every day shooting and hunting bands. Nothing comes close. 5 GZK BAND o.72 Posted by DAVID BROCK on Sep 18th 2017 I have bought bulk material of Theraband Gold, Amber Latex, Black Latex, GZK Latex 1mm but the GZK 0.72 is the best of all. I have got faster FPS and at this time have around 525 shots from these bands and still counting every shot trying for the 1000 shot. I didn't like GZK 1mm gold and black split in 100- 200 shoots. I've really not shot Amber bands all that much but i think they will fall in with gold and black split in couple hundred shots. GZK R # 1 5 Hits Hard Posted by Mark on Aug 20th 2017 I really like this to make thinner bands that are powerful and durable. A little on the expensive side but holds up very well. I got the 1 mm 2 GZK BAND Posted by Unknown on Aug 17th 2017 Don't like got the 1mm guess my fault may try 0.75 later 5 Good stuff Posted by Lester on Aug 5th 2017 Just got my order today and it the first time cutting my own bands. This stuff seems fast and hits hard. Satisfied so far. Will see how long the bands hold up.