Each 47mm Adams suction cup has a weight loading of 3 pounds (1.36kgs).
This suction cup has a long neck with gripper nubs around it's circumference and can be used for a sign which is 3mm in thickness or for gripping inside a drilled hole of an object. If using a drilled hole, the 4 x 1mm nubs will ease back out to grip the back of the poster (see technical drawing image for dimensions).
Suction Cups are ideal for hanging products in windows and for other fixings on glass and suitable surfaces. As Adams exclusive UK distributor, we have the largest range of strong Suction Cups or suckers for many uses in various types from hooks to mushroom head and sizes from mini to heavy duty. Our exceptionally high quality Suction Cups are professional looking that will not turn yellow or become brittle. Order online at Suction Cups Direct.