Kit of (8) vacuum cups (1) 3/32” (2.38mm), (1) 1/8” (3.18mm), (1) 3/16” (4.76mm), (1) 1/4” (6.35mm), (1) 3/8” (9.53mm), (1) 1/2” (12.70mm), (1) 5/8” (15.88mm), and (1) 3/4” (19.05mm), black, static dissipative Buna-N. Our vacuum cups can handle electronic components, glass lenses and certain medical applications.