Manufacturer reference: 990.501.11 D T L PR S Technical Characteristics Code Availability: 63.5 17.5 70 A1 12 990.534.11 63.5 17.5 70 B1 12 990.537.11 63.5 17.5 70.2 A1 12.7 890.534.11 63.5 17.5 70.2 B1 12.7 890.537.11 89 20.6 78.1 A 12 990.524.11 89 20.6 78.1 A 12.89 27.3 20.11 For added safety, it is advised to run the work in 2 steps; first using the Ø31.75mm (1-1/4″) bearing and then the Ø16mm (5/8″)