Hawke brand 1 inch medium mount. Suitable for scopes with 40mm lens and under. Eg. For a 3-9x40 use Medium Mounts. For a 3-9x50 use High Mounts. 

Price:  £13.95

Hawke brand 1 inch high mount. The extra clearance that a high mount provides is required for scopes that have lenses bigger than 40mm. Eg. For a 3-9x40 use Medium Mounts. For a 3-9x50 use High Mounts. 

Price:  £15.95