---
title: Tools International - Drive Down Bailer (Flapper Bottom)
description: Description, Specifications, Assembly, Components for the Tools International Drive Down Flapper Bottom Bailer.
image: https://www.tools-int.com/hubfs/Locking%20C%20Mandrel-Feb-20-2022-06-42-29-85-PM.png
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# DRIVE DOWN BAILER (FLAPPER BOTTOM)

#### Tools International Corp

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#### Description

#### Specifications

#### Assembly

#### Components

### Description

Drive Down Bailers are made of a barrel to hold the sand and a ball or flapper type check valve on the bottom. Usually, the very bottom of these bailers are cut off at an angle to make a horseshoe shape. They are used successfully in bailing mud and shale and are loaded merely by running them down in the mud and pulling back out.

![drivedownbailerflapperbottom](https://www.tools-int.com/hs-fs/hubfs/drivedownbailerflapperbottom.jpg?width=211&name=drivedownbailerflapperbottom.jpg)

 

### SPECIFICATIONS

 

| SPECIFICATIONS |  |  |  |  |
| --- | --- | --- | --- | --- |
|  | **1 1/4"** | **1 1/2"** | **1 5/8"** | **1 3/4"** |
| Fishneck O.D. | 1.188" | 1.188" | 1.375" | 1.375" |
| Max. O.D. | 1.250" | 1.500" | 1.625" | 1.750" |
| Pin Connection | 15/16"-10 | 15/16"-10 | 15/16"-10 | 15/16"-10 |
| Made Up Length | 59.625" | 60.688" | 60.563" | 61.063" |

### ASSEMBLY

 

| ASSEMBLY (COARSE THREAD) |  |  |  |  |
| --- | --- | --- | --- | --- |
|  | **1 1/4"** | **1 1/2"** | **1 5/8"** | **1 3/4"** |
| Part Number | 50DD1125 | 50DD1150 | 50DD1163 | 50DD1175 |

### COMPONENTS

 

 

| COMPONENTS (COARSE THREAD) |  |  |  |  |
| --- | --- | --- | --- | --- |
|  | **1 1/4"** | **1 1/2"** | **1 5/8"** | **1 3/4"** |
| Fishneck | 50DD2125 | 50DD2150 | 50DD2158 | 50DD2175 |
| Load Barrel | 50B01345 | 50B01346 | 50B01342 | 50B01348 |
| Flapper Bottom | 50SB8125 | 50SB8150 | 50SB8158 | 50SB8175 |

### ASSEMBLY

 

| ASSEMBLY (FINE THREAD) |  |  |  |  |
| --- | --- | --- | --- | --- |
|  | **1 1/4"** | **1 1/2"** | **1 5/8"** | **1 3/4"** |
| Part Number | 50DD4125 | 50DD4150 | 50DD4163 | 50DD4175 |

### COMPONENTS

 

 

| COMPONENTS (FINE THREAD) |  |  |  |  |
| --- | --- | --- | --- | --- |
|  | **1 1/4"** | **1 1/2"** | **1 5/8"** | **1 3/4"** |
| Fishneck | 50DDF125 | 50DDF150 | 50DDF158 | 50DDF175 |
| Load Barrel | 50B01420 | 50B01427 | 50B01434 | 50B01441 |
| Flapper Bottom | 50FT8125 | 50FT8150 | 50FT8163 | 50FT8175 |

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