The pipe bell is the safest type of bell we sell. If you choose a liberty bell, be sure to remove the clapper for your more "mechanical" birds. NP Liberty Bell, 25mm bell25$0.30, 50 for $12.50 NP Liberty Bell, 52mm bell52$0.80, 12 for $9.00 Vacuum Coated Liberty Bell, 14mm BL15$0.30, 12 for $3.00 Vacuum Coated Liberty Bell, 22mm VCLB22$0.35, 12 for $3.60 Vacuum Coated Liberty Bell, 32mm Vacuum Coated Liberty Bell, 32mm VCLB32$0.50, 12 for $5.40 Vacuum Coated Liberty Bell, 48mm Vacuum Coated Liberty Bell, 48mm BL48$0.75, 12 for $8.00 Stainless Steel Liberty Bell, 32mm SSLB25Regular Price: $1.50On Special! $1.25 Small Stainless Steel Pipe Bell SSBellsmllRegular Price: $14.49On Special! $10.80 Medium Stainless Steel Pipe Bell SSBellmedRegular Price: $19.99On Special! $15.99 Large Stainless Steel Pipe Bell SSBellLrgRegular Price: $22.50On Special! $19.99