S8240 0.5KG and 1KG weights, center double-sided 1/4 screw holes for telescope front and rear balance weights

S8240 

0.5KG Heavy Duty Bell

1/4 screw hole at the center of the telescope front and rear balance weights

Diameter: 60mm

Thickness: 25mm

S8241 

1KG heavy bell,

Center double-sided 1/4 screw hole, thread depth: 15mm

Diameter: 60mm

Thickness: 50mm