Mansfield 500 Series Stem 123-0095 16" Overall Length Stem MPP6002 and is the locking lid

and is the locking lid that Fits any Alto tank

Genuine Mansfield 3816 Cascade white tank lid

This stem will measures about 8" end to end with the spring loaded end extended

Mansfield By Prier Wall Hydrant Repair Kit 630-7755 Kit repairs 300

210-1112 Flush Valve

Mansfield 500 Series Stem 123-0095 16" Overall Length Stem MPP6002 and is the locking lidThis Stem Measures 16 Inches Long And Is The Replacement Stem For A 500 Series Faucet With 12 Inch frost protection. Stem comes with the packing washers for left, and right hand thread packing nuts. This stem does not come with the packing nut. The stem is made of copper and the handle screw will cut threads in it when installed. Please verify the model and length of your stem to save time and money.