XS Sights RV0001N4 Standard Dot Tritium S&W J Frame & Ruger SP101 (fixed rear) Rivet They are specifically designed to

They are specifically designed to handle the challenges faced with field termination of shielded cables but will also work with unshielded cables

6 channels input/12 channels output

Air Space: 0

And if that wasn’t enough

XS Sights RV0001N4 Standard Dot Tritium S&W J Frame & Ruger SP101 (fixed rear) Rivet They are specifically designed toXs Sights Standard Dot Tritium S&Amp; W J Frame &Amp; Ruger Sp101 (Fixed Rear) The Xs Standard Dot Tritium Night Sight Is A Superior Defensive Sight. Fits S&Amp; W J Frame With Pinned Front Sight And Ruger Sp101 With A Fixed Rear. Precision Machined In Fort Worth, Tx, Xs Sights Feature A Standard Dot Tritium Front Sight For Fast Sight Acquisition In All Light Conditions. Standard Dot Is Larger Than Most Fronts To Be Seen Under Stress, But Covers Less