Strong Metal frame can load 200kg,15-20cm telescopic distance This sex machine chair doesnt have power, and you dont need to connect it to electricity. it is safe enough. You can use any dildos that has sucker/suction cup. and our dildo is Thread interface type. you also can buy our other sex machine attachements/dildos for this chair. Name :sex machine gun Color:Black Size:50*40*47mm Material:Hard plastic,metal Weight:14kg Feature:Dildo Vibrator Fuction:masturbation