They define the spray pattern

7/8" OD x 1-3/8" LENGTH

Insulated Design:

medium and large sand molds

optimizing suction and helping to prevent scratches or damage to floors

Graco 110733 FITTING, ELBOW, 45 DEG. 1/4 NPT Front Brim They define the spray patternSpecifications UPC Product: 00633955995727 Family Code: MISC Country of Origin: CN Unit of Measure: EA Height: . 8 IN 2. 032 CM Length: 1. 75 IN 4. 445 CM Width: 1 IN 2. 540 CM Volume: . 001 FT3 0. 000 M3 Shipping Weight: . 13 LBS 0. 059 KG Technical Specifications Angle () 45 Connection Type Threaded Size A (in) 1 4 Size A (mm) 6. 35 System of Measurement Imperial Thread Type NPT Type Elbow