For Wood or Hollow Metal Doors (Template)

Standard weight /Medium frequency
BB 1279-plain bearing-steel
BB 1279- two bell bearing - steel
BB 1191- plain bearing- brass/stainless steel
BB 1191 - two ball bearings-brass/stainless steel

Plain bearing available in sizes  2 x 2, 2 ½ x 2 ½ , 3 x 3, 3 ½ x 3 ½ , 4 x 4, 4 ½ x 4 ½ , 5 x 4, 5 x 4 ½ , 5 x 5, 6 x 4 ½ 6 x 4 ½ , 6 x 5, 6 x 6

Ball bearing available in all above sizes except 2 x 2 and 2 ½ x 2 ½ 

Heavy weight /high frequency
BB1168 - Four ball bearings - Steel
BB1199 - Four ball bearings - Brass/stainless steel
Available in sizes  4 ½ x 4, 4 ½ x 4 ½ , 5 x 4 , 5 x 4 ½ , 5 x 5 , 6 x 4 ½ , 6 x 5 , 6 x 6 8 x 6 and 8 x 8

Five knuckle button tip
(with stainless steel pin)