Thank you for your question. Delta Faucet model # 79860-RB can only be mounted as a front mount lever on your tank.
Hello DinonChino, Thank you for your question on the Delta Cassidy French Curve Handle Toilet Tank Lever in Venetian Bronze. I will be happy to assist you today. Unfortunately, we cannot positively guarantee this lever will work with another manufacturer's toilet and I apologize for any inconvenience this may cause. I have provided a link below to the specification sheet for this tank lever to help determine whether or not the trip lever will have enough clearance within your toilet tank to operate properly: https://media.deltafaucet.com/SpecSheet/DSP-A-79860_Rev_A.pdf If you ever have any questions, concerns, or require anything further please feel free to give us a call on our warranty line at 800-345-3358 and we will be happy to assist you in any way that we can. Thank you, Matthew I. Delta Faucet Company Consumer Care
Hello Tailgater, Thank you for your question on the Cassidy French Curve Handle Toilet Tank Lever in Venetian Bronze. I am more than happy to help, this model is currently being manufactured with a metal arm. Please feel free to give us a call if we can help with anything further at 800-345-3358. Thank you, Brandy Delta Faucet Company Customer Service