Centra Long Range Sight Weaver Mount High quality polished stainless steel spindles on ball bearings Right-handed threading (Service Clicks) Moveable scale bars for zero point adjustment Clicks in either 1/4 Weaver mount Weight 200 grams Please call for Anschutz, Paramount, Redfield, Central mounts, or for the left-hand thread If you would like the left-hand thread please refer to SKU Cent10011 when calling.