@sinz54 @AbraarKaran If haven't used of them, but you probably need 9210+, which uses elastic straps. The rubber straps are much tighter. (I've noticed this comparing the 8210 to 8210+.)
@sinz54@AbraarKaran,如果你没有使用过它们,但你可能需要9210+,它使用弹性带。橡皮筋要紧得多。(我注意到这一点,将8210与8210+进行比较。)