Ryobi Tiller: 410r (21AK410G034), 410r (21BK410G034), 410r (21CK410G034), 410r (21DK410G034). Compatible With: 410r, 280r, 310BVr, 700r, 704r. Ryobi Handheld Blower: 280r (41CR280G034), 280r (41DR280G034).
eBay