Sinclair Drop Tubes are clear acrylic so you can observe your powder charge as it drops. Each drop tube is fitted with an aluminum sleeve to insure a perfect fit in your powder measure or drop tube adapter. Our drop tubes are available in two different inside diameters and four different lengths (custom lengths available, please consult your Sinclair representative). The longer lengths are great when you are trying to get more powder in a high-fill case, especially when using longer bullets.
Redding and RCBS measures require the installation of one of our drop tube adapters. The drop tubes fit directly into Lyman, Neil Jones, Dodd, Bruno, and older Sinclair/Culver measures (no adapter required). See the chart below for the appropriate size. Note: Special drop tubes available for .17 and .20 caliber cases (4" only).
Type A - For Redding and RCBS Powder Measures (w/Sinclair Adapters) Also, fits directly into Neil Jones Powder Measures (0.620" Sleeve)
Type B - For Lyman, Dodd, Bruno, and Older Sinclair/Culver Style Measures (0.560" Sleeve)
Sinclair, Issue:3B, Page:090