The YFL_A421 is a profesional model G alto flute with gold brass headjoint, body and footjoint, Sterling silver lip plate & riser, nickel silver (silver-plated) keys, double bladder pads, and optional straight or headjoint as pointed out below.

The YFL-A421UII with Curved Headjoint and YFL-A421BII with Straight Headjoint both feature drawn holes.

New scale
Excellent intonation and great response especially in the low register

Gold brass construction
A unique feature found only on Yamaha harmony flutes

Curved and straight headjoint
Players choice both headjoints are included.