C Curve Tweezers SC1 is Stainless steel type of material and the tweezers tip shape is 30 degrees curve. This tweezers have 7 holes, So it makes more light weight than other eyelash extension C curve tweezers(C Curve Tweezers C1). Also the tweezers leg thickness is 1 mm and the tweezers leg join part of thickness is o.5 mm. So it makes soft tension of the tweezers legs low pressure. If you worry about your finger joint health and wrist joint(carpal joint) of the arthrodynia(arthralgia), You can try to use C Curve Tweezers SC1 and You will keep your long term of joint health.