The chuck is the four corners of the snaps,and with the bracket and clip for tablet PCs,
Mobile phones,navigation systems,"Ta's MP5,PSP,etc.
Large Chassis Chassis Diameter:77mm
Small Chassis Chassis Diameter:55mm
You can use the base with a clip of the sucker,the link does not include the clip,as the base for four claws and belt clip.
Super suction strong, can withstand two kilograms of the product.