Slinghammer arms for 6mm, 7.5mm rubber tube

Update: got some new theratube. i already had silver an it was really stiff so instead of just dropping by one level of strength i drop a couple just to be safe an ill eventually buy a mix of it all but instead of black or blue i ended up with green so its still rated as heavy strength so should do good but is quite a bit easier to stretch than the silver. i wanted to try blue but it was double the price for the same amount so i'll wait til i catch it at normal price. i tired to get it to fit the new arms with the 6mm hole an there was no way it was fitting an the normal arms almost hold it but i tried by putting a 8mm bb in the end an it just pulled through the hole in the arms then i tried a m5 bolt an it was alittle better but still slowly slipped through the hole so heres another set of the arms in all lengths with a 7.5mm hole cause that is the size of the new tube, i probably should have went with 8mm but i wanted to make sure it holds good an i dont have to worry about it slipping. if anyone has a size that they need let me know an i'll make another set to whatever size you need an add them as well, i didnt realize there was a 7.5mm until i put my calipers on the tube but 10 8 and 6mm is all i had ever seen b4 so just let me know if u have something and ill help out an eventually i hope to have them in whatever size that could ever be needed an it doesnt change anything other than the hole size so no worrys about it changing the look or strength, if it goes over 10mm i may have to add alittle material but it would only be to make sure the strength is the same as the original. its pretty easy for me to make the changes with how i have done it in tinkercad so dont hesitate to ask. 

after printing the slinghammer the only rubber i had on hand was either to strong or to small to fit so i made these. at first i tried theratube silver an it felt like it was to stiff for the arms an string length i had an i didnt want to chance breaking it so i made these arms to use with the 6mm od 3mm id tubing i had an its shooting really good an flat at around 60 65 feet with the mid length arms. i tried the short first but the length of the string i made was to long for it to latch the trigger so i just went ahead an printed the mid out an thats made the rubber stay under just a small amount of tension an the trigger now locks easy when cocking it. using a rubber band for the trigger right now but im working on getting a actual spring to use so that could have alot to do with the feel of how it latch the trigger when cocking it.