Prism Trial Lens Set

Prism lens set  
1.Includes 18pcs of prism lens  
2.Silvr metal rim  
3.Aluminum case

Double of the following power.

1Δ, 2Δ, 3Δ, 4Δ, 6Δ, 8Δ, 10Δ, 12Δ, 14Δ