1.) All Kinds of handrail Flange & Joiners: Round Base Plate, Round Adjustable Heavy Duty Base Plate, Square Base Plate, Oblong Base Plate, Wall Stop Flange, mounting round base, base plate, base brackets 2.) Material: AISI316, AISI304 with mirror & satin finish 3.) Size: for 2", 1.5" and 33.7mm, 42.4mm and 48.3mm tube