Hi.. A french bat may be known by other names elsewhere..It is a strop on a wooden frame like a paddle. it is used just before you head to the strop. The one I have is made from Carborundum me thinks.Quiet old still in original box complete with unopened and unused buffing paste. It is quiet well used but still a cool find..The old Barber that used to work for me years ago( image a grey haired and bearded elvis that was a wealth of knowledge on rock and roll and could sharpen a straight with his eyes closed).. Sorry got carried away reminiscing.. Where was I, oh yeah. He remebers his old master using them in the day, Was a big surprise to him when I dragged it out.. I am sorry I have not posted pics yet .They will follow.. I am so exicted about sharing my stuff I do not know where to start.. cheers