Size #1 pins = 1 1/8" long
Size #2 pins = 1 1/2" long
I mostly hand baste my bed quilts, but use pins on wall or baby quilts. I also use BRASS pins to baste because:
1.) they are softer to close;
2.) they do not rust and risk staining my quilt.
They are more expensive but are one of those tools in quilting that I will not skimp on....like proper rulers and Olfa cutters, blades, and mats.
Jan in VA